Mitsubishi Error Code P0442: How to Fix It

Q: Can I drive my Mitsubishi with P0442 code?

Yes, you can drive with P0442 as it's a minor emissions issue and won't damage your engine. However, you may fail emissions testing, and fuel economy could be slightly reduced. Address the issue promptly to prevent potential damage to other EVAP components.

Q: How much does it cost to fix P0442 on a Mitsubishi?

Costs vary widely depending on the cause. A new gas cap costs $15-40, vacuum line replacement is $20-50, a purge valve runs $50-150, and a charcoal canister replacement can cost $200-500 including labor. Most P0442 codes are resolved with simple gas cap replacement.

Q: Will P0442 cause my Mitsubishi to fail inspection?

Yes, P0442 will typically cause your vehicle to fail emissions testing or state inspection. Most testing facilities check for active trouble codes, and EVAP system codes are monitored. You'll need to fix the issue and drive enough for the readiness monitors to complete before retesting.

Q: What's the difference between P0442 and P0446?

P0442 indicates a small leak in the EVAP system, usually in vacuum lines or gas cap. P0446 indicates a restricted or blocked EVAP vent valve/solenoid. P0442 focuses on leak detection, while P0446 deals with proper system venting and airflow.

Q: How long should I drive to clear P0442 after repairs?

After clearing the code, drive for 50-100 miles through mixed conditions including highway speeds, city driving, and some idle time. The EVAP monitor typically runs during specific drive cycles when fuel level is between 1/4 and 3/4 tank and after the engine has been off for several hours.

Abstract

The P0442 error code on your Mitsubishi indicates a small leak in the Evaporative Emission Control (EVAP) system, which captures fuel vapors before they escape into the atmosphere. This is typically a minor issue that can often be fixed by checking the gas cap, but may require inspection of vacuum lines or the charcoal canister if the problem persists.